Mark Zuckerberg has long championed Meta Platforms Inc.’s open-source approach to artificial intelligence software — which lets other companies access and build on top of its technology — saying that having an American model as the underpinning of new products was key to ensuring US dominance over China in AI.

Meta and other AI competitors are facing challenges from China's DeepSeek as its new AI model outperforms competitors at lower costs.

The sudden rise of Chinese AI app DeepSeek has leaders in Washington and Silicon Valley grappling with how to keep the U.S. ahead in the crucial technology.